XML 122 R102.htm IDEA: XBRL DOCUMENT v3.6.0.2
Employee Benefit Plans - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
plan
Dec. 31, 2015
USD ($)
Defined Benefit Plan Disclosure [Line Items]    
Number of pension plans | plan 2  
Defined benefit pension plans    
Defined Benefit Plan Disclosure [Line Items]    
Estimated contributions in the next fiscal year $ 2.6  
Accumulated benefit obligation 127.0 $ 115.0
Underfunded status of plan $ 21.6 $ 10.5
U.K. Plan    
Defined Benefit Plan Disclosure [Line Items]    
Maximum increase in pensionable earnings 2.00%  
Funded percentage (less than) 100.00%  
U.K. Plan | Global return fund    
Target allocations of plan assets    
Target allocation in debt securities 28.00%  
U.K. Plan | Real estate    
Target allocations of plan assets    
Target allocation in debt securities 19.00%  
U.K. Plan | Corporate bonds    
Target allocations of plan assets    
Target allocation in debt securities 11.00%  
U.K. Plan | U.K | Equity securities    
Target allocations of plan assets    
Target allocation in debt securities 23.00%  
U.K. Plan | Other Than United Kingdom | Equity securities    
Target allocations of plan assets    
Target allocation in debt securities 19.00%  
Canadian Plan | Corporate bonds    
Target allocations of plan assets    
Target allocation in debt securities 40.00%  
Canadian Plan | Canada | Equity securities    
Target allocations of plan assets    
Target allocation in debt securities 20.00%  
Canadian Plan | Other Than Canada | Equity securities    
Target allocations of plan assets    
Target allocation in debt securities 40.00%